Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c1fefc6763f2a1…

MALICIOUS

PDF

41.8 KB Created: 2021-05-14 14:17:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9c6f45cd9ab1c4db749b06e78b78f212 SHA-1: 958d160c4e8e02f5af011043590abaf046c939eb SHA-256: 95c1fefc6763f2a1534d69d68156a2dcad45a229d2e7c342e1959f9631cef01b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/479516143/worst-client-game-hack PDF link annotation
    • http://kirikkalesmmmo.org.tr/images/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/hack-coin-master-spin-apk_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://kirikkalesmmmo.org.tr/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://playhack.in/minecraftIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ac2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AC2 24696 bytes
SHA-256: 5109683127f9044fb2ef98999c994a68fb3067eb0f14eeacd772603a3b17a5af
font_01_sfnt_off00008295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8295 17752 bytes
SHA-256: c4c464576242dc15d115a20e89f4ad7b5703edf25fae76549fb4d98dda0b80b5

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